Free calculator

System Airflow (CFM)

Calculate total system airflow based on your HVAC equipment size and airflow per ton.

Results

Enter your dimensions and hit Calculate.

Assumptions

  • Total CFM = system tons × CFM per ton.
  • Typical design target: 400 CFM/ton for residential split systems.

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Land Planning Master Checklist

The complete checklist for planning your property — from raw land to build-ready site. Clearing, access, drainage, septic, utilities, permits, foundation, and everything in between.

  • ✓Every stage in the right sequence
  • ✓What to verify before each phase starts
  • ✓Questions to ask your contractor
  • ✓Common mistakes and how to avoid them

Free account — includes the checklist + 3 saved calculations.

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